“Heat did what heat does,” Ray told him, looking at the spread of numbers. “It just didn’t do it evenly. That’s not a burner problem. That’s an airflow and depth problem.” Malik hadn’t thought about drying that way before. He’d assumed without really examining the assumption that hot air moving through grain meant the grain dried more or less the same everywhere given enough time. What Ray was describing was more complicated than that. How deep the grain sat in the dryer. Whether air was actually moving evenly through that depth or finding its way through unevenly instead. How long any given kernel actually spent inside the airflow. Not just how hot the air was when it got there. All of it mattered, and none of it showed up just by checking the temperature gauge.
Malik started keeping a log for every test batch after that. Grain type and starting moisture, batch size, moisture out sampled from multiple points instead of one, airflow settings, grain depth, how long the batch ran, ambient temperature outside since that changed things too. It wasn’t glamorous work, mostly numbers on a clipboard, but it was the only way to actually see what was happening instead of guessing from how the grain looked or felt.
His first instinct, when he kept finding wet spots in test batches, was to turn the heat up. More heat should dry more grain faster. That seemed obvious enough. It made things worse. The wet spots dried out some, but new inconsistencies showed up elsewhere in the batch, and a portion of grain that had been fine before came out over-dried and cracked under the higher heat. Malik lost a real amount of test grain to that mistake. Not a huge quantity, but enough to sting, and enough to make him stop and actually think about what Ray had told him instead of reaching for the simplest lever available.
“You’re not short on heat,” Ray said, looking over the ruined batch with him. “You’re short on even distribution. Turning up the heat just makes the uneven parts more uneven faster.” The real fix took longer to find than the wrong one had. Malik worked with Ray on correcting leaks and gaps in the air system that were letting air bypass parts of the grain bed, leveling the grain more consistently as it loaded instead of letting it pile up in the center, reducing batch depth until the fan could actually push air through the full mass instead of finding the path of least resistance around it, and matching how much grain he ran through the unit at once to what that specific dryer could actually handle properly instead of loading it to whatever felt efficient.
It also meant accepting a hard limit. This small dryer built out of the best parts salvaged from 14 dead units was never going to handle the kind of volume a commercial grain elevator moved through in a day. It processed modest batches steadily and evenly, and that was the ceiling. Learning the dryer’s limit mattered as much as learning how to make it work. By fall, repeated test batches were landing consistently within the moisture range he and Ray had worked out as acceptable for that grain and that setup, sample to sample. Not perfect every single time, but close enough often enough that Malik finally understood what the machine was actually doing instead of just hoping it worked.